Absorption enhancement has been considered as an effective way of improving coefficient of performance\n(COP) of refrigeration systems and magnetic enhancement is one of these methods. A\nmodel of magnetic field enhancement in ammonia-water absorption systems is presented in this\npaper. A numerical model using finite difference scheme was developed based on the conservation\nequations and mass transport relationship. Macroscopic magnetic field force was introduced in\nthe momentum equation. The model was validated using data obtained from the literature. Changes\nin the physical properties of ammonia solution while absorbing both in the direction of falling\nfilm and across its thickness were investigated. The magnetic field was found to have some positive\neffect on the ammonia-water falling film absorption. The results indicate that absorption performance\nenhancement increased with magnetic intensity. The COP of simple ammonia solution\nabsorption refrigeration system increased by 1.9% and 3.6% for magnetic induction of 1.4 and 3.0\nTesla respectively.
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